This old conditional was targeted for Apple compilers in a Unix
environment (probably A/UX, which hasn't been sold in over 10
years). It now interferes with installations under MacOS X.
This uses pmatch() as a default pattern matcher,
and #defines USER_SOUNDS_REGEX for Qt
to enable the code for regular expressions.
This is enabled for win32tty and win32gui.
Add an optional paniclog file, controlled by a new PANICLOG macro that can
be used to log all panic and impossible messages. Helpful when people
forget to send, or didn't see, the message.
These changes clean up build warnings and allow the resulting "NetHack"
Application icons to be dragged around freely in the Finder, as is expected
for Mac apps.
